Hello.
Thank you for your query at DoctorSpring.com
Yes, The TSH of 9.4 is defly high and expected after radioIodine.
This degree of Subclinical hypothyroidism also is enough to adversely affect prospects of conceiving and a successful pregnancy thereafter.
I suggest you start Thyroxine replacement with 50mcg and adjust the dose every month by testing TSH and keep a target of TSH of 0.4-2.5 mIU/l.
Feel free to discuss further,
Regards.